555868 has 6 divisors (see below), whose sum is σ = 972776. Its totient is φ = 277932.

The previous prime is 555857. The next prime is 555871. The reversal of 555868 is 868555.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

555868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69480 + ... + 69487.

2⁵⁵⁵⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

555868 is a deficient number, since it is larger than the sum of its proper divisors (416908).

555868 is a wasteful number, since it uses less digits than its factorization.

555868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138971 (or 138969 counting only the distinct ones).

The product of its digits is 48000, while the sum is 37.

The square root of 555868 is about 745.5655571444. The cubic root of 555868 is about 82.2224773414. Note that the first 3 decimals are identical.

The spelling of 555868 in words is "five hundred fifty-five thousand, eight hundred sixty-eight".